Quantitative measurement of mixtures by terahertz time-domain spectroscopy

Journal of Chemical Sciences

Xiaojing Ma¹  Zengyan Zhang¹  Hongwei Zhao¹  Shihua Ma¹  Guifeng Liu1¹  Wenfeng Wang1¹ 

[1] Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China$$

关键词: THz-TDS;    chemical mixture;    quantitative analysis;    𝑚-aminophenol;    𝑚-nitroaniline.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

Terahertz time-domain spectroscopy (THz-TDS) was applied for quantitatively analysing a series of binary mixtures and a ternary mixture. Binary mixtures having different weight ratios of two components, 𝑚-aminophenol and m-nitroaniline, were investigated by THz-TDS in the range of 0.3 to 1.5 THz, and it was found that the absorption coefficients of the components in each mixture were linearly proportional to their concentrations in the mixture. The results from analysis were in agreement with actual values with a relative error of less than 7%. The quantitative method will help in the detection of illegal drugs, poisons and dangerous materials that are wrapped or mixed with other materials.

【 授权许可】

Unknown